Macaroni press



J. DE FRANCISCI Feb. 26, 1929- 1,703,514

memo: Puss Original Filed Oct. 51, 1924 7 2 Sheets-Sheet 1 j Patented Feb. 26, 1929. I 7

'u iT o STATES, PATENT OFFICE,

JOSEPH DE FRANCISCI, or BROOKLYN, NEW YORK, ASSIGNOR To CONSOLIDATED MAGARONI MACHINE CORPORATION'OF NEW YORK, 11. Y., A CORPORATION OF NEW YORK.

Original application filed October 31, 1924, Serial No.

MACARONII PRESS.

746,920. Divided and this application filed August.

21, 1 925, SeriaI NO. 51,564.

This invention is a macaroni press, and it pertains more particularly to a hydraulic motor for controlling themovement of the press-plunger and for precluding leakage 5 of the motive, fluid from, the high pressure end of the power'cylinder. I

The invention of this application'is a dlVlsic-n of a prior application filed by me on October 31, 1924, Serial No. 7%,920. I I

10 One part of the invention is a novel packfor effectually precluding the leakage ot the motive fluid from the high pressure end of the power cylinder. o Y

Another part of the invention 1s an '1m proved mechanism operated by' the power plunger for efiieoting the automatic reversal in the direction of movement of the power plungeras it approaches or reachesthe lim t of its movement. 7 i Other functionsand advantages of the in 'ention' wiilappear from the following de; scription taken in connection w ththedraw-i ings, wherein a Figure 1 is a view partly'm elevat on and partly in vertical section of a hydrauhc motor for a macaroni press embodying my mvention. I l 1 i Figure 9, is avertic'al sectional view through the niotor illustrating the fluid pressure packing for the high'pressure end of themotor cylinder. v V p I V Figure 3 is a detail view of the plunger con-' troller illustrating the parts in the reverse position of Figure Mounted in a trainer-r is a power cylinder B, within which operates'a power plunger C,

the diameter'ot whicl'rfor a part of its length is slightly less than the internal' (lia1n'eter of said power o linder, thus producing aII lII- termediate annular-space 0', At its upper end, the plunger isvprovided with a piston head 6' having packing, rings b, bflaof any s itable characterp At the lower end, said plungerprotrudes below the power cylinder and is provided h a flange c, with which co-operates mcanstor shifting a valve mechanism. V V o 1 p The upper part ofthe'power cylinder is counter-bored to produce apressure chamber D, the internal diameter of which exceeds the internal diameter of the working chamber in which operates the power plunger C. This enlargement of the pressure chamber D provides a seator shoulder of on which rests a pressure head (Z. outlet valve '(P, and a spring pressed inlet valve d said valves controlling the flow'ot" fluid through passages (Z? and (Z respectively. As shown, the outlet valve (Z is retained with a suitable cage, whereas the inlet valve is in the form of a needlevalve, but any type of valve may be used;

' The pressure cylinder is itself closed at its top by a cylinder head E, which is shown as having a depending"annular flange e, the diameter of which is less than the internal diameter of the pressure chamber 1) above the pressure head (1 by which the pressure chamber is separated from the working chamber This head'carries' an of the power cylinder, This depending. flange enters the pressure chamber, and said flange is spaced from the annularwall of said chamber. A packing c is nterposed between'the flange c and the wall of said chamber, said packing being compressed between top and bottonimetal rings 0?, a by clamping bolts 6 which are threaded through the cylinder head and engage the upper ring 6 The lower ring 0 is'of sectlonal. construction, a

and it is received within a circumferential groove 0 cut in the outer Ivall of the head I .Theconstruction at the upper part of the 'powcrcylinder herein described constitutes "an important part of my invention, and emessing great strength bodies a strui cture'p and which acts ethuctiveiy to seal the pressure chaniljm' against fluid leakage under high in me worl-nng conditions. 7

dough cfy'ilnClCl'S -li connected therewith by the sleeve are supported asa unit on heavy springs H, H, whlch loosely encircle the frame posts-A and 'rest upon collars k, h,

fikedly attached to said frame posts, said springs'bearing upwardly against-side eXtensions B, B ot the power cylinder B. V The cylinder. head E is retained in position by collars 76 ,711, hired to the posts A of the press The power cylinderfand the douglicylinders are tree to have a limited vertlcaltravel en the pressframeuponthe compression of The power cylinder 1:3,and a pluralitvof:

trame. v v

F is movable downward by fluid pressure v m, leading from said valve 0 to the upper part and. the lower part respectively or the 1n the neutral posi "catcd by the dotted line a: in igin'e 1,11 1 pressure flows throw Y valve to either end the power cylinder; withthc valve n ioved to the h ll line position ii Figure 1, :l'lu-id'l'lows throi to the upper part of thecylinder to; pressure to the plunger and thus 1" power stroke thereto; but with shifted to the dotted line position h ure 1, the valve controls the flow o l pressure by shutting oil the flow through pipe in and directing the flow through pipe Flt" to the lower part of the cylinder for raising the plunger at an increased speed as compared with the speed oi? movement on the descending power stroke of the plunger.

The control valve 0 is provided with an operating handle 0, to which is pivoted a rod 0, extending upwardly to and above the valve Q in the lower end or the power cylinder B, said.

rod being provided at its upper end with a stop 0. An angular latch l. is pivoted at 0 to the press frame or the cylinder B, one arm of this latch is fitted loosely on the valve rod 0' for engagement with the stop 0 thereof, whereas the other depending arm oi. the latch is provided with a notch 92 and with protruding cam face 72 see Figures 1 and 3. To the pivoted angular latch l is count in directing d a coiled spring i the fluid into the upper part of the power cylinder ll, the tree notched end of the ki'ifjllltil latch is cngagcable with stop u'ieuiher t3 shown as a pivoted element controlled by spring and this stop member oo-operates with the latch l "for retaining the spring 5 under tensiom and locking the valve rod l) and the valve 0 in the position to direct the flow of fluid to the upper part oi the power cylinder. A latch releasing member ll in the.

form of a trip pin co-operates with the latch 1, said trip pin being slidable in the power cylinder at the lower part 'thereot. The outer end of the trip p n is adapter i'or con tact with the angular latch. P, whereas the inner end of the trip pin when in a set position, extends into the space 0 between the plunger B and the cylinder-wall, so that said inner end of the trip pin is in the beveled face h of the plunger.

(lu the power stroke of the plunger, it forced .th of the v downwardly by the fluid pr ssure, and the trip pin and the latch remain in the position, t Figur l, but as the plunger approaches the limit of its downward travel. the trip pin is eng aged by the bevel race of the plithe effect of which is to press the trip outwardly and thus shit-t the latch for. its notched lower end to be disengaged from the stop member Q, and thereupon the spring expands for pulling the latch and the valve rod upwardly, as in Figure 8, the result of which is to shift the valve Q, and thus verse the flow of fluid by closi the flow to pipe sci/and opening the flow to pipe in, whceby the control valve isreversed auto-, matically by devices responsive to the travel. of the plunger. I Y After a dough cylinder'ischarged, the control valve is shifted to the full line position of Figure 1 for directing the motive fluid through pipe on into the pressure chamber D above the pressure head (Z. The fluid fills the chamber D and the continued sup ply oi fluid increases the pressurewithin the chamber, the pressure being accumulatedor bui t up in said chamber until the resistance of the springs H, H, is overcome the result,

of which is to cause, the power cylinder and the dough cylinders to slide downwardly for a limited distance. The, lower end of the dough cylinder F or F is thus seated by the energy of fluid pressure built up in the chamber D so as to secure a sealed connection between said dough cylinder and'the eXtruding die before the motive fluid is admitted to the working chamber of the power cylinder. fThe pressure continues to accumulate within the chamber D until it overcomes the resistance of the spring associated with the needle valve, and thus the motive fluid is admitted to the working chamber of the power cylinder to force the plunger downward. The descent of the plunger uponthc material extrudes the latter through the die, a oil as the plunger approaches the lowerliniit oi? its movement. witnin the power cylinder, the beveled cam face 7% contacts the inner end 01" the trip pinytorcing it outwardly and causing the angular latch to disengage it itroni the detent, whereupon the spring lifts the angular latch and the valve rod to therecontrol valve to a neutral aosition thus ari v 7 i resting the. operation of the press.

In my invention the power cylinder is pro vided with a chamber 1) which may said to be separate from the working chamber' This separate chamber D is usually isolated from the working chamber by the head d, although said head maybe omitted, but in practice it is used. Said separate chamber I), herein referred to as the pressure. chamber, isot greater cross sectional area than'the working chamber of the power cylinder, and this separate chamber is useful in that it'affords a space within which the pressure is built up or accumulated for the purpose of imparting the downward limited travel to the aower c linder and the dou 'h c'linders' l y a 1 I), the diameter of which exceedsthe internal diameter of the working chamber in which travels the-power plunger C. When the press is 1n serv ce, the pressure of the fluid is built up or accumulates in the chamber D until the'resistance of the springs H, H, is overcome, and thus a downward travel,

to a limited extent, is imparted to the .con-

nected power and dough cylinders, the effeet of whichis' to seat thedough cylinder upon the extruding die and to attain a sealed connection therebetween prior to the descent of the power plunger; p

Having thus fully described the invention, what I claim as new anddesire to secure by Letters Patent is: I I

1. In motorfor a press,- a pressure cylin der and a plunger, a cylinder head provided with a depending flange spaced relatively to the cylinder and forming a space vfor a packing which is exposed to the pressure ofmotive fluid, a pressurehead seated within the cylinder and producing a chamber within which the pressure of motive fluid is adapted to be built up, said pressure head having an iniet port to the pressure cylinder, and means for supplying motive fluid to the. pressure chamber,

2. In a motor for a press, a power cylinder head provided with means for retaining a packing, a plate seated within said power cylinder to produce a chamber within which may be built up thepressure of a motive fluid supplied to said chamber, said packing being exposed to fluid pressure within the chamber, said pressure plate being provided with an inlet to the working chamber of the power cylinder and an exit port from said chamber, means for feeding amotive fluid to said pressure chamber of the power eyl inder, and a plungeroperable within said power cylinder.

3. In a'motor for a press, a power cylinder, a head for said power cylinder, said head having means for retaining a packing, a plate positioned fixedly within said power cylinder and producing a chamber within which may be'built 'up'the pressure of a motive fluid adapted to be supplied to said chamber, a packing co-operable with said head and exposed to the pressure of the motive fluid, a plunger, and means carriedby said head for controlling the flow of motive fluid from the chamber to the power cylinder.

4. In a motor for apress, or like apparatus, a power cylinder mounted l or slidable movement, a pressure chamber within which a motive fluid is adapted t'oaccumulate to a determined pressure, said pressure chamber including a member'exposed to fluid pressure and operable for imparting sliding movement to said power. cylinder, means opposing the sliding movement of the power cylinder, and means for admitting motive fluid to the power cylindcrwhen the pressure within the pres sure chamber exceeds the determined limit.

5. In a motor for a press, orlik'e apparatus, a s-lidable power cylinder having a working chamber, means a-fl'ording resistance to the sliding motion ofthe power cylinder, a pressure chamberunitary with the power cylinder within' which pressure chamber a motive fluid is adapted to flow for attaining a determined pressure, said pressure chamber including a member exposed to fluid pressure and operable for iniparting sliding motion to, the

power, cylinder, and means for feedingmo:

tive fluid from the pressure chamber to the working chamber whensaid motive fluid attains a determined pressure within the pres. sure chamber. r p i 6. In a motor for a press, or like apparatus, a'power cylinder provided'with a working chamber and with a pro cross sectional area of which exceeds the correspondingarea of the working chamber, a" plunger operable. within the workingchambcr, and valved means for establishingcomseine chamber the I lie munication between the pressure chamber and the working chamber, said valved means i being closed during the, accumulationof inotive fluidlwlthm the pressure chamber: and

said valve. being operated by the motive fluid when it reaches a determinedpressure within the pressure chamber, whereby the-motive fluid is supplied to the working chamber for actuating thelplunger therein.

7: In a motor for a press,,or like apparatus,

a powercylinder provided with a working chamber and a pressure chamber. the cross sectional area of which exceeds the correspondlng area of the 'worklngfchamber, a1,

plunger operablewithin the working chamher, a valvedcommumcatlon intermediate the pressure chamber and the working chamber for admitting a fluid to the latter chamber, whereby the plunger is actuated in one direction, and a separate valved connection for the egress of motive fluid from the Working chamber on the return movement of said plunger.

8. In a, motor for a press or other apparatus, a power cylinder, at plunger provided with a coin face, a control valve operable at Will when in a neutral position and connected for feeding a motive fluid to said cylinder whereby said plunger-is act, ed in both the power stroke and toe return stroke by a mo tivc fluid flowing from :2 source of supply through said control vz-ilve latching means :t'or lockine said control valve in an o aerative position during he period of flow of the inc-- tive fluid on the POWCI' stroke oi the plunger, ineans operated. by the plungor-cam-itncc as the plunger approaches the limit of its power stroke, for reversing the control valve whereby the flow of niotive fluid through said control valve is diverted from one end the cylinder to the other end thereof and the niotive fluid is effective in inipertingthe return stroke to said phuiger and separate valveshift'ting means operable on the return move ment of the plunger for moving said control valve to a neutralposition whereby the re turn travel of the plunger is arrested by the cessation in theflow of the motive fluid,

9. In amotor for a press or other opparatus, a power cylinder, a plunger provided with a cam face, control valve operable at Will when in a neutral pos tion and connected for feeding a motive fluid to. aid power cylinder for effecting the power stroke. and the return stroke of said plunger, a latch member connected opcrotively with said con.

trol valve; a detent co-operable with said latch member for looking said control valve during tl e p, wer stroke of said plunger, a release member slidahle through the cylinder Wall and positioned in the path of the cam face of said plunger to he actuztted by the trovel oif the plunger as the latter oproaches the hunt or Iuovci-nent 1n one direcneinhcr for eti'lecting the disengagement of said latch from the (Lletent. mean for roversing the control valve on the release of the latch iii-ember whereby the ilmvof motive uid is diverted from one end of tllGl'lOWQl cylinder to the other end therco' turn stroke of the plunger is enectod hy the pressure of motive fl-uirh and in: s operable tie plunger means for releasing and leversing the control valve onthe vcomp etion of the fiower stroke of the plunger, whereby the of the cylinder to the other end thereof and the return stroke of the plunger is occasioned by the energy oi the motive fluid and, sin leve connected with the control valveandoperable directly by theshoulder of the plunger the latter approaches the lio t of its return stroke, for moving said control valve to a neutral position and arresting the flow oi? the motive fluid, whereby the is brou cessation in the flow of the motive fluid. e

In testimony whereof I have hereto signed my name this, day of August, 1925.

' OSEPH DE FRANCFSOI.

ion, said release member acting on the latch t and the re flow of motive fluid is diverted from one end ght to a state of rest by 

